Recurring search error in Activity Log
Using Jamroom
If you can figure out a way to make it fire consistently then I can help some more.
I'd try open one tab with the activity log open in it, then in another tab click around. keep refreshing the activity log to see if anything new comes up.
If you can identify a page that when refreshed causes that error to fire, then its something on that page.
Then narrow down from there.